Just like tinkertoys: An alternative approach to access imidazole-containing π-conjugated materials is presented. The imidazole core was assembled at the same time as the oligomer by the palladium-catalyzed multicomponent coupling of imines, diimines, and di(acyl chloride)s, thus providing access to families of new conjugated materials, each formed in a one-step, catalytic reaction (see scheme; Ts=4-toluenesulfonyl).
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Siamaki et al. (2011) studied this question.
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